Autonomic Nervous System — Flashcards

Flashcard 1: Chemical synapses are usually _____directional

Answer: uni

Flashcard 2: Major relay of the second order neuron of the _____-spinothalamic pain pathway is thalamus

Answer: neo

Flashcard 3: In the retina, which cells are the only ones to develop propagated action potentials?

Answer: Ganglion cells

Extra: While most retinal cells (photoreceptors, bipolar, horizontal, and amacrine cells) communicate via graded potentials, ganglion cells generate action potentials to transmit signals along the optic nerve to the brain.

Flashcard 4: Sympathetic neurons have _____ pre-ganglionic and long post-ganglionic neurons

Answer: short

Flashcard 5: The reticular activating system recieves collaterals from the _____ pathways

Answer: sensory

Flashcard 6: Parasympathetic neurons have _____ pre-ganglionic and short post-ganglionic neurons

Answer: long

Flashcard 7: The image shows decerebrate rigidity, in which there is _____ excitation

Answer: reticulospinal

Flashcard 8: Clonus is due to sustained hyperactivity of _____ motor neurons.

Answer: alpha and gamma

Flashcard 9: _____ are sudden, jerky eye movements that occur as the gaze shifts from one object to another, performed to bring image of an object quickly on the fovea.

Answer: Saccades

Flashcard 10: _____ is the main inhibitory neurotransmitter of the CNS

Answer: GABA